Schott 157.402 KL Series 4-Point Ringlight 66mm

The Schott 157.402 KL Series 4-Point Ringlight (66mm) is a precision fiber optic ring light delivering illumination from four discrete, evenly spaced points around the ring circumference — designed for Schott KL series cold light sources and engineered for applications requiring directional contrast illumination, oblique lighting from multiple angles, or shadow-enhancement techniques that reveal surface texture and topography invisible under uniform ring illumination.

• 💡 4-point discrete illumination — light delivered from four evenly spaced points around the ring, creating controlled directional shadows that enhance surface texture, relief, and topographic detail
• 🎗️ Contrast and shadow-enhancement capability — the four-point pattern reveals surface features that are invisible under uniform annular ring illumination
• 📏 66mm inner diameter — fits most stereo microscopes directly without an adapter
• 🔌 Compatible with Schott KL series cold light sources — KL 1500, KL 1600, and KL 2500 — via standard fiber optic light guide connection
• 🇩🇪 Schott quality, made in Germany — precision fiber optic construction for consistent, high-efficiency light transmission and long service life
• ✅ New — catalog number 157.402

🔧 Product Description

The Schott 157.402 is a 4-point fiber optic ringlight for Schott KL series cold light sources — a specialized alternative to the standard annular (157.420) ringlight that delivers illumination from four discrete, evenly spaced points around the 66mm ring rather than continuously around the full circumference. This four-point illumination pattern creates controlled directional shadows between the illumination points, enhancing surface texture, relief, and topographic detail that would be washed out under uniform annular ring illumination. The 4-point configuration is particularly effective for revealing surface scratches, machining marks, grain structure, embossed features, and other surface topography on specimens where shadow contrast is needed to make features visible. It can also be used to create oblique illumination effects from four directions simultaneously, providing a different contrast modality than single-arm gooseneck or full annular ring illumination. Compatible with Schott KL 1500, KL 1600, and KL 2500 cold light sources. The 66mm I.D. fits most stereo microscopes directly. Supplied new from stock, catalog number 157.402.

🔎 Typical Applications

• Surface texture and topography enhancement using shadow-contrast illumination
• Detection of surface scratches, machining marks, and grain structure
• Embossed feature and relief examination on coins, seals, and stamped parts
• Materials science surface characterization requiring directional contrast
• Quality control inspection of machined and finished surfaces
• Forensic examination of surface marks and impressions

📊 Key Specifications

University and institutional purchase orders are welcome. Please contact us for invoicing and procurement documentation.